Understanding Capillaries: Function, Differences with Arteries and Veins

Capillaries are tiny blood vessels that allow the exchange of oxygen and nutrients between the blood and the body's cells. They are so thin that red blood cells have to pass through them in single file, and they are often too small to be seen with the naked eye.

Q. What is the function of capillaries ?
Ans. The main function of capillaries is to allow the exchange of oxygen and nutrients between the blood and the body's cells. They also help to regulate the body's water balance and play a role in maintaining blood pressure.

Q. What is the difference between arteries, veins and capillaries ?
Ans. Arteries are large blood vessels that carry oxygenated blood away from the heart to the rest of the body. Veins are larger blood vessels that carry deoxygenated blood back to the heart. Capillaries are tiny blood vessels that allow the exchange of oxygen and nutrients between the blood and the body's cells.

Q. What is the difference between a artery and a capillary ?
Ans. Arteries are much larger than capillaries, and they have thicker walls that can withstand higher blood pressure. Capillaries are so thin that red blood cells have to pass through them in single file. Additionally, arteries carry oxygenated blood away from the heart, while capillaries allow for the exchange of oxygen and nutrients between the blood and the body's cells.